A129118 - cp's OEIS frontend

A129118 For each permutation p of {1,2,...,n} define minabsjump(p) = min(|p(i) - i|, 1<=i<=n); a(n) is the sum of minabsjumps of all p.

n	a(n)
1	0
2	1
3	2
4	10
5	48
6	295
7	2068
8	16654
9	150382
10	1508500
11	16631696
12	199966907
13	2603709640
14	36501212971
15	548150650582
16	8779185528284
17	149376644391508
18	2690852138104504
19	51161190374132154
20	1023850096381041159
21	21512688329462044264

[0, 1, 2, 10, 48, 295, 2068, 16654, 150382, 1508500, 16631696, 199966907, 2603709640, 36501212971, 548150650582, 8779185528284, 149376644391508, 2690852138104504, 51161190374132154, 1023850096381041159, 21512688329462044264]

cp's OEIS Frontend

A129118 For each permutation p of {1,2,...,n} define minabsjump(p) = min(|p(i) - i|, 1<=i<=n); a(n) is the sum of minabsjumps of all p.

Table of values

List of values